Pilgrimage site for star-crossed lovers.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

On a small Slovenian island, diners can mix and match a classic cake into dozens of sweet and savory flavor combinations.

This one-time health resort was used by aristocrats around the world.

The only museum with its curator—and her pets—buried inside.

100 year tradition of fist fights, marked by marble footsteps.

Go inside to really appreciate this 500-year-old technological masterpiece.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The headquarters of the famous Yale society.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

Less a museum than a bizarre fantasy world created by artists and engineers.

One car at a time please.

These pretty kitties killed and ate as many as 135 railway workers.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.